They lead very monochromatic lives at the top of their profession. Lebron James, for all his manifest dignity and intelligence, essentially never gets to "Take time off" and is working on his body and his game 365 days a year, around which he squeezes public appearances or branding or business meetings or whatever. Maybe partners at Wachtell work obscene hours but their lives can and do consist of more variety, whether or not they seek it. In today's top-level pro sports, not putting in max effort every day means the next guy up behind you can and will take your job. Even CEOs know that (A) they need to disconnect from time to time so as not to go crazy and to be able to be at their best the rest of the time, and (B) their skillsets require a lot more EQ and personality management than they do repetitive work, so they get a quality-over-quantity approach to what they do. In my experience, top businesspeople all share an incredible level of skill at managing their own time, and deftly saying no to demands on it when needed, so I think that's different, yeah. Less so for the bankers I know, though - that's probably more comparable, at least until you get to the MD level.
There's another distinction, perhaps more worthy of V&N than here, but it's in the nature of business to want to eschew competition. There's an inverse correlation between the profitability of a business and how competitive it is. For many people in many industries, the environment may resemble professional sports - there's one VP in the org structure and 1000 people gunning to get that role, and no ability to create differential value on your own, so it's dog-eat-dog to get that promotion. By contrast, if you're really doing your job designing or running a business well, you've
eliminated the need to worry about competitors. Most real businesses are somewhere between those two extremes, but a really successful businessperson can likely afford to be selectively lazy.
So I guess your answer depends on how you define "focus and dedication". If you ask me, the people willing to take hundreds of thousands of swings of a baseball bat over the course of a childhood are made of very different mental stuff than the people with the charisma and cleverness to attract resources and success to themselves in a business career, even if you'd call both of them "focused" in the absence of more specific terms.